Novel benzopyran derivatives
US4252818A · kind A · utility
6Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Aug 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
7-[3-(4-Acetyl-3-hydroxy-6-iodo-2-propylphenoxy)-2-hydroxypropoxy]-4-oxo-8- propyl-4H-1-benzopyran-2-carboxylic acid and its pharmaceutically acceptable salts are employed as antagonists of SRS-A (the slow reacting substance of anaphylaxis) in the treatment of asthma and allergic diseases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.